haskell



' G. W. HASKELL.

Thill-Goupling.

No. 205,082. Patented June 18, I878,

UNITED PATENT OFFIC GEORGE w. HAsKnLL, OF PHILADELPHIA, PA., AssIeNoR T0 HIMSELF, WILLIAM H. HAsKELL, ANl HENRY .I. HAsKnLL, on SAME PLACE.

IMPROVEMENT IN THILL -COUPLINGS.

Specification forming part of Letters Patent No. 205,082, dated June 18, 1878; application filed May 20, 1878. r

To all whom it may concern:

. Be it known that I, Gnonen W. HAsKnLL, of Philadelphia, Pennsylvania, have invented a new and useful Improvement in Thill-Goup- ]ings,of which the following is a specification:

My invention relates to certain improvements in the thil1-coupling for which Letters Patent of the United States No. 185,528 were granted to my assignees on the 19th day of December, 187 6; the objects of my present improvements being to prevent rattling due to lateral movement of the thill iron, and to simplify the construction of the other parts of the deviceobjects which I attain in the following manner, reference being had to the accompanying drawing, in which- Figure 1 is alongitudinal section of my improved thill-coupling; Fig. 2, a plan view of the same; Fig. 3, a perspective view of the detachable parts of the coupling, and Fig. 4 a sectional View of part of the coupling.

A represents the front axle, and B the clip, arranged to embrace the axle, and secured thereto by nuts 00, the clip being provided with two projecting ears, a a, between which is hun g, by a transverse bolt, b, the eye 11 of the thilliron D, the latter being secured to the pole, or

to one of the shafts, in the usual manner.

Hung to the ears or by means of lugs 6, resting on the tops of the ears, is a block, E, which is arranged to bear against the eye a, as described hereinafter, and has two downwardly and rearwardly projecting arms, f, between the lower ends of which is a block, 9, pivoted to the arms in the present instance, and having a threaded opening adapted to a screw-stem, h, which is reduced in diameter at the frontend, and has an elongated eye, h, by which it may be turned.

Secured to or forming part of the pivotpin 1), and projecting downwardly from one end-thereof, is a plate, F, on which is formed an arm, 1', for hearing against the axle and against the under side of one of the ears 0!, and on the plate F is also formed an inwardlyprojecting arm, m, on which is a lug, n.

The reduced portion of the screw-stem h is adapted to a vertical slot, j, in a plate, I, carried by a plate, F, the latter having an arm, t", similar to the arm'i of the plate F, and having also an upwardly-projecting lug, p, in the front edge of which is formed a recess, q, the recessed portion of the lug being adapted to the notched end of the bolt 1), in the same manner and for the same purpose as in my patented coupling.

The lug n assists in preventing the lateral withdrawal of the bolt b, for when the parts are properly fitted together the lug n is adapted to the enlarged opening 8 at the upper end of the slot j in the plate I. This opening is threaded, in order to permit the introduction of the screw stem it into its proper position, the threaded portion of the stem being first screwed through the opening, and the reduced portion of the stem being then depressed into the slot j.

The pressure of the block E upon the eye d of the thill-iron is caused by arubber block, J, which surrounds the reduced portion of the stem h, and intervenes between the plate I and the eye 71/ on the stem, washers t being arranged, in the present instance, at each end of the block, so as to prevent any friction upon the rubber when the screw-stem is turned. Any form of spring may, however, be substituted for the rubber.

In. order to prevent the accidental rising of the stem h from the slot j, lugs w are formed on the front of the plate 1, these lugs coming in contact with the inner washer t when the latter attempts to rise.

In order to prevent the detaching of the screw-stem h from the block E, the end of said screwstem, after passing through the block 9, is enlarged by hammering or otherwise. If the block g is rigidly secured to the ends of the arms, it will be necessary to allo .v the screw-stem h to be withdrawn, in order to get the coupling apart.

It will be observed, on reference to Figs. 2 and 4, that the ends of the eye (1 are beveled, and that theblockE has at each end proj ectlons y, adapted to the said beveled ends of the eye. This forms one of the most important features of my invention, as I am thereby enabled to confine the eye d laterally and prevent rattling, owing to sidewise movement of the shaft or pole, thus overcoming a serious objection to thill-couplings in which the clampingblock isin frictional contact with the rear face of the eye only.

Other modes than that shown of effecting this lateral confinement may be adopted. For

- -instance, the face of the eye may be curved,

and the block may have a curved recess adapted to the curved face of the eye.

By forming the rearWardly-projecting arms f on the block E, I am enabled to bring the other parts of the coupling much farther in toward the axle than in the patented coupling,

so that the present coupling presents a mater and more attractive appearance than the former one.

I claim as my invention- 1. A thill-coupling in which the clampingblock E is arranged to laterally confine the eye d on the thill-iron all substantially as set forth.

GEORGE W. HASKELL.

Witnesses HARRY A. CRAWFORD, HARRY SMITH. 

